海洋微生态模拟舱抗震可靠性研究及震害预测
发布时间：2018-09-08 16:57
【摘要】：近年来关于海洋生态环境的研究持续升温,由于海洋研究的特殊性,简单的实验室模拟实验或船舶科考,都不能对海洋长期变化过程进行全面研究。因此,建造变量可控的海洋生态环境模拟体系,成为解决海洋科学问题的新途径。目前,若干高校和科研机构已经建造的可控的大型实验水体都是以研究水平过程为目标而设计的,不能够满足当前对海洋垂直过程研究的迫切需要。针对这一现状,山东大学(青岛校区)提出在陆地上建造以研究大陆架海洋垂直过程为目的的海洋微生态模拟舱方案。该方案中的海洋微生态模拟舱是立式薄壁圆柱壳结构,其主要特点是：1)高径比大；2)长简体结构；3)直径厚度比大；4)内部充满海水。这种结构在地震动力作用下很容易发生失稳破坏,从而使舱体失去承载能力,舱壁变形甚至坍塌。本文主要进行海洋微生态模拟舱的抗震可靠性研究及震害预测。具体工作如下：1.根据大陆架海洋垂直深度的特点和海洋科学实验要求对海洋微生态模拟舱进行设计,主要有模拟舱本体、温控系统、光照系统、层流系统、海水成分控制系统及监测系统。2.根据有关规定,并参考其他类似结构基础的设计,对海洋微生态模拟舱基础进行设计,并对基础的抗震能力进行验算。3.用通用有限元仿真软件Adina8.5仿真模拟舱壁厚度对模拟舱地震动力响应的影响,并提取模拟舱舱壁应力值,并根据仿真模拟结果对模拟舱舱壁进行变厚度设计。4.用通用有限元仿真软件Adina8.5仿真模拟地震烈度对模拟舱地震动力响应的影响,提取地震动力响应过程中模拟舱舱壁的最大应力、应力云图和液面晃动波高、晃动云图。5.用通用有限元仿真软件Adina8.5仿真模拟储液深度对模拟舱地震动力响应的影响,提取地震动力响应过程中模拟舱舱壁的最大应力值、应力云图及液面晃动波高、晃动云图。6.参考地震灾害等级划分的相关规定,划分海洋微生态模拟舱地震破坏等级,并对影响海洋微生态模拟舱抗震可靠性的主要因素进行分析,总结各地震烈度下模拟舱的地震灾害等级及宏观表现。
[Abstract]:In recent years, the research on marine ecological environment has been heated up continuously. Because of the particularity of marine research, simple laboratory simulation experiments or ship science can not comprehensively study the long-term variation process of the ocean. Therefore, it is a new way to solve the problem of marine science to build marine ecological environment simulation system with controllable variables. At present, a number of universities and scientific research institutions have built large controlled experimental water bodies designed to study horizontal processes, which can not meet the urgent needs of the current research on vertical ocean processes. In view of this situation, Shandong University (Qingdao Campus) proposed to construct a marine microecological simulation module on land for the purpose of studying the vertical process of the continental shelf ocean. The marine microecological simulation module in this scheme is a vertical thin-walled cylindrical shell structure, the main feature of which is: 1) high aspect ratio 2) long simplified structure 3) diameter to thickness ratio of large diameter to thickness ratio of 4) the interior is filled with sea water. This kind of structure is vulnerable to instability and failure under seismic dynamic action, which makes the bulkhead lose its bearing capacity, and the bulkhead deforms and even collapses. In this paper, the seismic reliability and earthquake damage prediction of marine microecological simulation module are studied. The work is as follows: 1. According to the characteristics of the vertical depth of the continental shelf and the requirements of marine scientific experiments, the marine microecological simulation module is designed, including the simulation module body, the temperature control system, the illumination system, the laminar flow system, the seawater composition control system and the monitoring system. According to the relevant regulations and referring to the design of other similar structural foundations, the foundation of marine microecological simulation module is designed, and the aseismic capacity of the foundation is checked. 3. The influence of bulkhead thickness on the seismic dynamic response of simulated cabin is simulated by Adina8.5, and the stress value of simulated bulkhead is extracted, and the variable thickness design of simulated bulkhead is carried out according to the simulation results. The general finite element simulation software Adina8.5 is used to simulate the influence of seismic intensity on the seismic dynamic response of the simulated cabin. The maximum stress of the simulated cabin bulkhead, the height of the stress cloud and the sloshing wave on the liquid surface, and the sloshing cloud figure .5 are extracted in the process of seismic dynamic response. The influence of liquid storage depth on the seismic dynamic response of the simulated cabin is simulated by using the general finite element simulation software Adina8.5. The maximum stress values of the simulated cabin bulkhead, the height of the stress cloud diagram and the sloshing wave on the liquid surface, and the sloshing cloud diagram .6 are extracted during the seismic dynamic response process. Referring to the relevant rules of seismic disaster classification, the earthquake damage grade of marine microecological simulation cabin is divided, and the main factors influencing the seismic reliability of marine microecological simulation module are analyzed. The earthquake disaster grade and macroscopic performance of the simulation module under various earthquake intensity are summarized.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P715;P315.9
本文编号：2231123
[Abstract]:In recent years, the research on marine ecological environment has been heated up continuously. Because of the particularity of marine research, simple laboratory simulation experiments or ship science can not comprehensively study the long-term variation process of the ocean. Therefore, it is a new way to solve the problem of marine science to build marine ecological environment simulation system with controllable variables. At present, a number of universities and scientific research institutions have built large controlled experimental water bodies designed to study horizontal processes, which can not meet the urgent needs of the current research on vertical ocean processes. In view of this situation, Shandong University (Qingdao Campus) proposed to construct a marine microecological simulation module on land for the purpose of studying the vertical process of the continental shelf ocean. The marine microecological simulation module in this scheme is a vertical thin-walled cylindrical shell structure, the main feature of which is: 1) high aspect ratio 2) long simplified structure 3) diameter to thickness ratio of large diameter to thickness ratio of 4) the interior is filled with sea water. This kind of structure is vulnerable to instability and failure under seismic dynamic action, which makes the bulkhead lose its bearing capacity, and the bulkhead deforms and even collapses. In this paper, the seismic reliability and earthquake damage prediction of marine microecological simulation module are studied. The work is as follows: 1. According to the characteristics of the vertical depth of the continental shelf and the requirements of marine scientific experiments, the marine microecological simulation module is designed, including the simulation module body, the temperature control system, the illumination system, the laminar flow system, the seawater composition control system and the monitoring system. According to the relevant regulations and referring to the design of other similar structural foundations, the foundation of marine microecological simulation module is designed, and the aseismic capacity of the foundation is checked. 3. The influence of bulkhead thickness on the seismic dynamic response of simulated cabin is simulated by Adina8.5, and the stress value of simulated bulkhead is extracted, and the variable thickness design of simulated bulkhead is carried out according to the simulation results. The general finite element simulation software Adina8.5 is used to simulate the influence of seismic intensity on the seismic dynamic response of the simulated cabin. The maximum stress of the simulated cabin bulkhead, the height of the stress cloud and the sloshing wave on the liquid surface, and the sloshing cloud figure .5 are extracted in the process of seismic dynamic response. The influence of liquid storage depth on the seismic dynamic response of the simulated cabin is simulated by using the general finite element simulation software Adina8.5. The maximum stress values of the simulated cabin bulkhead, the height of the stress cloud diagram and the sloshing wave on the liquid surface, and the sloshing cloud diagram .6 are extracted during the seismic dynamic response process. Referring to the relevant rules of seismic disaster classification, the earthquake damage grade of marine microecological simulation cabin is divided, and the main factors influencing the seismic reliability of marine microecological simulation module are analyzed. The earthquake disaster grade and macroscopic performance of the simulation module under various earthquake intensity are summarized.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：P715;P315.9
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